Reactive Polymers最新文献_第6页

Protein adsorption on functional hydrophilic polymer beads: role of structural properties and medium conditions 蛋白质在功能性亲水性聚合物珠上的吸附:结构性质和介质条件的作用

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90135-X

Elmas Gök , Menemşe Kiremitçi , I. Serdar Ateş

{"title":"Protein adsorption on functional hydrophilic polymer beads: role of structural properties and medium conditions","authors":"Elmas Gök , Menemşe Kiremitçi , I. Serdar Ateş","doi":"10.1016/0923-1137(94)90135-X","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90135-X","url":null,"abstract":"<div>Acrylic polymer beads comprising a combination of 2-hydroxyethylmethacrylate (HEMA) with acrylic acid, dimethylaminoethylmethacrylate (DMAEMA), and methylmethacrylate were prepared by suspension copolymerization technique. In this study, we have examined the effects of polymer structural properties and medium conditions on the adsorption of plasma proteins, i.e. bovine serum albumin (BSA) and fibrinogen. The studies were carried out in dilute solutions and measurements of adsorbed proteins were realized by fluorescence spectroscopy. It was shown that the extent of protein adsorption depends upon the hydrophilicity and electrical charge of both of the polymeric surfaces and proteins. In addition, environmental conditions affect the adsorption behaviour by changing the structure of protein molecules. The maximum adsorption was observed on poly(HEMA-DMAE) beads for both of BSA and fibrinogen. For this polymeric structure multilayer BSA adsorption was observed in the range of 0.1–0.5 mg/ml solution concentration. For all surfaces, the adsorbed quantity of fibrinogen was greater than that of BSA.</div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90135-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Synergistic complexation of metal ions with bifunctional interpenetrating polymer networks 金属离子与双功能互穿聚合物网络的协同络合作用

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90134-1

A.A. Kriger , B.A. Moyer , S.D. Alexandratos

引用次数: 6

Synthesis and characterization of polystyrene-supported chelating resin containing an ON donor bidentate Schiff base and its copper(II), nickel(II), cobalt(II), iron(III), zinc(II), molybdenum(VI) and uranium(VI) complexes 含ON供体双齿希夫碱的聚苯乙烯负载螯合树脂及其铜(II)、镍(II)、钴(II)、铁(III)、锌(II)、钼(VI)和铀(VI)配合物的合成和表征

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90133-3

A. Syamal, M.M. Singh

{"title":"Synthesis and characterization of polystyrene-supported chelating resin containing an ON donor bidentate Schiff base and its copper(II), nickel(II), cobalt(II), iron(III), zinc(II), molybdenum(VI) and uranium(VI) complexes","authors":"A. Syamal, M.M. Singh","doi":"10.1016/0923-1137(94)90133-3","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90133-3","url":null,"abstract":"<div>A new bidentate ON donor Schiff base supported on a polystyrene matrix has been synthesized by the reaction of aminomethylated polystyrene and hydroxyacetone. The chelating resin reacts with metal salt/metal complex and forms metal-bound polymers. The formulae of the metal-bound polymers are: PSLCu(CH3COO)·S, PSLNi (CH3COO)·3S, PSLCo(CH3COO)·S, PSLFeCl2·2S, PSLZn (CH3COO)·S, PSLZnCl·S, PSLMoO2(acac), and PSLUO2(CH3COO)·S (where PSLH = polymer-anchored ligand; S = ethanol or methanol and acac = deprotonated acetylacetone). The polymer-anchored complexes have been characterized by elemental analysis, IR and electronic spectra and magnetic susceptibility measurements. The negative shifts of the ν(CO) (alcoholic) and ν(CN) (azomethine) are indicative of the ON donor behaviour of the polymer-anchored ligand. The complexes PSLNi(CH3COO)·3S, PSLCo(CH3COO)·S, PSLFeCl2·2S, and PSLCu(CH3COO)2·S are paramagnetic while PSLZn(CH3COO)·S, PSLZnCl·S, PSLMoO2(acac), and PSLUO2(CH3COO)·S are diamagnetic. The force constant and UO bond distance of the polymer-anchored uranium(VI) complexes are 7.03 mdyn/Å and 1.73 Å, respectively. The copper(II)- and cobalt(II)-bound polymers exhibit a square planar structure, nickel(II), iron(III), molybdenum(VI) and uranium(VI) complexes are octahedral, and zinc(II) complexes are tetrahedral.</div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90133-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Hydrogenation catalysts based on palladium complexes with poly(vinylpyridine) 钯-聚乙烯基吡啶配合物加氢催化剂

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90131-7

A. Zharmagambetova, S. G. Mukhamedzhanova, E. A. Bekturov

引用次数: 7

Synthesis and characterization of polymer-immobilized β-cyclodextrin with an inclusion recognition functionality 具有包合物识别功能的聚合物固定化β-环糊精的合成与表征

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90130-9

Xiao-Bin Zhao, Bing-Lin He

引用次数: 13

Synthesis and photochemical properties of insoluble poly(styrene) beads containing pendant norbornadiene moieties 含降冰片二烯不溶性聚苯乙烯珠的合成及光化学性质

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90138-4

T. Nishikubo, Atsushi Kameyama, Katsuhiko Kishi, Chikara Hijikata

引用次数: 10

Synthesis of carboxyl group containing hydrazine-modified polyacrylonitrile fibres and application for the removal of heavy metals 含羧基肼改性聚丙烯腈纤维的合成及其在重金属脱除中的应用

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90136-8

B.W. Zhang , K. Fischer , D. Bieniek , A. Kettrup

{"title":"Synthesis of carboxyl group containing hydrazine-modified polyacrylonitrile fibres and application for the removal of heavy metals","authors":"B.W. Zhang , K. Fischer , D. Bieniek , A. Kettrup","doi":"10.1016/0923-1137(94)90136-8","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90136-8","url":null,"abstract":"<div>Carboxyl group containing hydrazine-modified polyacrylonitrile (PAN) fibre was prepared by a modified method of T. Miyamatsu and N. Oguchi. The first investigation of this modified ion exchange fibre (IEF) revealed that the maximum capacities of the modified PAN fibre for the heavy metal ions Cu2+, Cd2+, Zn2+, Co2+, Pb2+, Cr3+, Ni2+ and Hg2+ were 1.33, 1.30, 1.03, 1.02, 0.98, 0.96, 0.95 and 0.63 mmol/g (dry weight), respectively. According to the distribution coefficients the order of decreasing selectivity of the cation exchanger for the various metal ions was Cu2+ > Zn2+ > Cr3+ > Hg2+ > Cd2+ > Pb2+ > Ni2+ > Co2+. The product could be reused after regeneration with diluted nitric acid. The high exchange capacity for copper, which offers possibilities for the application of the material for industrial purposes, was examined in additional experiments.</div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90136-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 53

Sorption of unconjugated bilirubin by means of novel immobilized β-cyclodextrin polymers 新型固定化β-环糊精聚合物对非共轭胆红素的吸附

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90129-5

Xiao-Bin Zhao, B. He

引用次数: 8

Polystyrene-supported ammonium fluoride as a catalyst for several base-catalyzed reactions 聚苯乙烯负载氟化铵作为几种碱催化反应的催化剂

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90139-2

Noritaka Ohtani, Y. Inoue, A. Nomoto, Shigeyuki Ohta

引用次数: 7

Synthesis of carboxyl group containing hydrazine-modified polyacrylonitrile fibres and application for the removal of heavy metals 含羧基肼改性聚丙烯腈纤维的合成及其在重金属脱除中的应用

Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90136-8

B. Zhang, K. Fischer, D. Bieniek, A. Kettrup

引用次数: 54